Economizer with overlapping plates



Oct. 13, 1931. H. J. KERR 1,827,201

ECONOMIZER WITH OVERLAPPING PLATES Filed Oct. 5. 1928 T +3 N ff a. L. 12 11 17 -ffi L4 INVENTOR ATTORNEY'S 1a tical sectional View part1 Patented Oct. 13, 1931 UNITED STATES [P TENT orricu HOWARD J. KERR, OF WEBTFIELD,NEW JERSEY, ASSIGNOR TO BABCOCK & 'WILCOX COMPANY, OF BAYONNE, NEW JERSEY, A CORPORATION OF NEW JERSEY ECONOMIZER WITH OVERLAPPING PLATES Application filed October 5, 1928. Serial No. 310,510.

- This invention relates to an economizer setting in which headers and tubes of an economizer are located with removable overlap ping plates along one side of the gas pass so that water which may be used for washing the tubes will not escape along the side of the setting. The invention will be understood from the description in connection with the accompanying drawings, in which Fig. 1 is a verbroken away through an illustrative em odiment of the invention; Fig. 2 is a side view partly broken away on an enllirged scale showing some of the details; and, Fig. 3 is a section along the its line 33 of 2.

In the drawings reference character 1 indicates an economizer setting, the walls oi which may be provided with the usual layer of heat insulating material. A. row of super- 2@ posed headers 2 of an economizer is located near one side of the 'setting'and plates 3 bridge the spaces between the economizer headers2 so that the headers and plates make up one side or wall of the gas pass. The

. 2h headers 3 are connected by rows bf U-tubes 4- in a manner alread known.

.Water to be heate may be introduced into the lowermost header 2 and passes through the U-tubes at, as indicated by the arrows, and successive headers 2 to the uppermost header from which the water can be taken away by the usual well known connections (not shown). The gases for heating the water pass downwardly across the tubes, as indicated by the vertical arrows.

A support 5 is provided for the tubes 4 and other supports ma be provided as. maybe found necessary. wall making up the side of the gas pass opposite the headers 2 is installed in proximity to the curved ends 6 of the tubes 4. This wall is made up of a number of overlapping metal plates 7 each one of which has an outwardl extending flange 8 at its upper edge. The p ates 7 are also provided with handles 9 for convenience in removing and replacing same. Vertical supports 10 are provided at opposite ends of the wall that is made u of the plates 7. The supports 10 are provided WithbOlts 11 at intervals in a vertical direction slightly less inside of the wall made up of the plates than the width of the plates 7 The plates 7 are provided with holes 12 near their upper corners which holes are slightly larger than the heads of the bolts 11 so that the plates can be slipped over the bolt heads and moved downwardly short distances to cause the slots 13 extending from the upper edges of the holes 12 to fit upon the bolts 11, thus facilitating assembly or removal of the plates and preventing their displacement when in position. The lower corners of the plates 7 are cut away as indicated at 14 to accommodate the bolts 11 at the lower edges of the plates.

The plates 7 are installed so that the lower edge of each plate is inside the upper edge oi. the succeeding plate below it. lln this way the water that is used for washing the out side of the tubes 4 trickles down alon the 7 and does not escape to the outside or? the economizer setting. The-water passes out throughthe outlet 15 at the bottom through which outlet the gases for heating the tubes pass during the normal operation. The overlap. ping plates 7 not only prevent the wash water from striking the outer casing of the economizer, but they also form a gas seal independently of the outer casing.

The section 16 of the setting near the wall that is made up of the plates 7 is made removable. The section 16 and the plates 7 can be remc ved for the purpose of withdrawing the tubes 4 in case repairs are needed.

Changes and modifications can be made without departing from the scope or spirit of the invention.

I claim:

1. In an economizer setting, a wall comprising overlappingv plates, 11. support for said plates, and means whereby said plates can be readily removed from said support.

2. In an economizer setting, a wall comprising overlapping plates, a support for said plates, and means whereby said plates can be readily removed from said support, said means comprising bolts on said support and holes in said plates.

3. An economizer comprising headers and U-tubes connecting said headers, said tubes being subjected to a washing operation, one

side of the gas pass in said economiier being made 11 tween the joints.

4. An economizer comprising headers and U-tubes connecting said headers, said tubes being subjected to a washing operation, one

side of the gas pass in said economizer being madeup of overlappin plates nncalked between the joints and "in proximity to the bends in said tubes.

5. An economizer comprising headers and U-tubes connecting said headers, one side of the gas pass in sald economizer being made up of overlapping plates in proximity to the bends in said tubes and the other side thereof comprising said headers.

1 6. In combination, an economizer setting parts within said setting which are subjected to a washing operation, a wall of said setting bein lined with overlapping plates having unca ked joints therebetween, whereby the washing fluid trickles down along the inside of said wall.

7.. In combination, an economizer setting, parts within said setting which are subjected to a washing operation, a wall of said setting being lined with overlapping plates having uncalked joints therebetween, whereb the washing fluid trickles down along the inside of said wall, and a Isquqpport for said plates.

WARD J. KER.

oi overlapping plates nncalked be- I 

